Moisture

How does the foam get the right amount of moisture?

Fresh foam absorbs moisture from its surroundings. In particularly dry environments it makes sense to wet    the surfaces to be joined. But standing water droplets are to be avoided, as in this case the water would actually become a barrier to proper adhesion.

What happens when there is insufficient moisture on the surfaces or in the surrounding environment and no water has been sprayed onto the foam?

A lack of moisture leads to inefficient curing of the foam and, depending on the amount of foam applied, may lead to foam compression – even months later.